Grade 12 Chemistry

State which law of thermodynamics each statement corresponds to.
a. “A system can never reach a temperature of 0 K.”
b. “Heat will never of itself flow from a cold object to a hot object.”
c. “Whenever heat is added to a system, it transforms to an equal amount of some other
form of energy.”

1 answer

a. This statement corresponds to the Third Law of Thermodynamics, which states that it is impossible to reach absolute zero (0 K) through any finite number of processes.

b. This statement corresponds to the Second Law of Thermodynamics, specifically the principle of Carnot's Theorem, which states that in a closed system, heat will naturally flow from a hot object to a cold object, and not the other way around.

c. This statement corresponds to the First Law of Thermodynamics, also known as the Law of Conservation of Energy. It states that energy cannot be created or destroyed, only transferred or converted from one form to another.